<template>
    <el-container class="home-container">
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <el-aside :width="collapse?'64px':'200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <el-menu
                    background-color="#333744"
                    text-color="#fff"
                    active-text-color="#409eff"
                    :collapse="collapse"
                    :collapse-transition="false"
                    :unique-opened="unique"
                    :router="true"
                    :default-active="active">
                    <el-submenu :index="menu.id+''" :key="menu.id" v-for="menu in menuList">
                        <template slot="title">
                            <i :class="iconsObj[menu.id]"></i>
                            <span>{{ menu.authName }}</span>
                        </template>
                        <el-menu-item v-for="item in menu.children" :key="item.id" :index="'/'+item.path" @click="saveNavState('/'+item.path)">
                            <template slot="title">
                                <i class="el-icon-menu"></i>
                                <span>{{ item.authName }}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                    
                </el-menu>
            </el-aside>
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
    data(){
        return {
            menuList:[],
            iconsObj:{
                "125":"iconfont icon-user",
                "103":"iconfont icon-tijikongjian",
                "101":"iconfont icon-shangpin",
                "102":"iconfont icon-danju",
                "145":"iconfont icon-baobiao",
                "200":"iconfont icon-morentouxiang"
                // "":"",
                // "":"",
            },
            collapse:false,
            unique:true,
            active:''
        }
    },
    created(){
        this.getMenuList();
        this.active = window.sessionStorage.getItem('active');
    },
    mounted(){
        
    },
    methods:{
        logout(){
            window.sessionStorage.removeItem('token');
            this.$router.push('/login')
        },
        async getMenuList(){
            const {data:res} = await this.$http.get('menus');
            if(res.meta.status != 200){
                return this.$message.error(res.meta.msg);
            }
            console.log(res.data)
            this.menuList = res.data;
            const menuObj = {
                authName:'自定义功能',
                children:[
                    {
                        authName:'Vuex',
                        children:[],
                        id:201,
                        order:1,
                        path:'vuex'
                    },
                    {
                        authName:'Todo',
                        children:[],
                        id:202,
                        order:1,
                        path:'todo'
                    }
                ],
                id:200,
                order:6,
                path:"vuex"
            }
            this.menuList.push(menuObj);
        },
        // 菜单的展开或者折叠
        toggleCollapse(){
            this.collapse = !this.collapse;
        },
        saveNavState(activePath){
            this.active = activePath;
            window.sessionStorage.setItem('active',activePath);
        }
    }
}
</script>

<style lang="less" scoped>
.home-container {
    height: 100%;
}
.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 0;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
    }
    span {
        margin-left: 15px;
    }
}
.el-aside {
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main {
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button {
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.5em;
    cursor: pointer;
}
.el-main{
    padding: 5px;
}
</style>